Title :
Carbon dioxide gas sensor with ionic gel
Author :
Ishizu, Kentaro ; Takei, Y. ; Honda, Masakazu ; Noda, Kentaro ; Inaba, A. ; Itoh, Takayuki ; Maeda, Ryutaro ; Matsumoto, Kaname ; Shimoyama, Isao
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
Abstract :
This paper reports on a low-power-consumption carbon dioxide (CO2) gas sensor based on an ionic gel. Ionic gel is a mixture of ionic liquid and polymer. We employed 1-ethyl-3-methyl-imidazolium tetrafuloroborate ([EMIM][BF4]) as ionic liquid and polyvinylidene fluoridecohexafluoro propylene (PVDF-HFP) as polymer. The [EMIM][BF4] selectively absorbs CO2 gas. Our proposal sensor consisted of an ionic gel and two Pt electrodes patterned under the ionic gel. The CO2 gas concentration can be detected by measuring the electrochemical impedance between the two electrodes. The sensor was able to measure the difference of 500 ppm CO2 gas concentration by using power as small as 0.65 μW.
Keywords :
carbon compounds; chemical variables measurement; electric impedance measurement; electrochemical electrodes; gas sensors; platinum; polymer gels; 1-ethyl-3-methyl-imidazolium tetrafuloroborate; CO2; PVDF-HFP; Pt; [EMIM][BF4]; carbon dioxide gas sensor; electrochemical impedance measurement; electrode; gas concentration; ionic gel; ionic liquid mixture; ionic polymer mixture; low-power-consumption; polyvinylidene fluoridecohexafluoro propylene; Carbon dioxide; Electrodes; Gas detectors; Impedance; Impedance measurement; Liquids; Ionic gel; carbon dioxide; gas sensor; impedance measurement; ionic liquid;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on
Conference_Location :
Barcelona
DOI :
10.1109/Transducers.2013.6627097
